285121038 has 16 divisors (see below), whose sum is σ = 585654480. Its totient is φ = 92471616.

The previous prime is 285121027. The next prime is 285121061. The reversal of 285121038 is 830121582.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 285120996 and 285121014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 641943 + ... + 642386.

It is an arithmetic number, because the mean of its divisors is an integer number (36603405).

Almost surely, 2^285121038 is an apocalyptic number.

285121038 is an abundant number, since it is smaller than the sum of its proper divisors (300533442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

285121038 is a wasteful number, since it uses less digits than its factorization.

285121038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284371.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 285121038 is about 16885.5274717730. The cubic root of 285121038 is about 658.1775850044.

The spelling of 285121038 in words is "two hundred eighty-five million, one hundred twenty-one thousand, thirty-eight".